/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.commons.client.sync;

import org.apache.commons.pool2.PooledObject;
import org.apache.commons.pool2.impl.DefaultPooledObject;
import org.apache.iotdb.common.rpc.thrift.TEndPoint;
import org.apache.iotdb.commons.client.BaseClientFactory;
import org.apache.iotdb.commons.client.ClientFactoryProperty;
import org.apache.iotdb.commons.client.ClientManager;
import org.apache.iotdb.confignode.rpc.thrift.IConfigNodeRPCService;
import org.apache.iotdb.rpc.RpcTransportFactory;
import org.apache.iotdb.rpc.TConfigurationConst;
import org.apache.iotdb.rpc.TimeoutChangeableTransport;
import org.apache.thrift.protocol.TProtocolFactory;
import org.apache.thrift.transport.TSocket;
import org.apache.thrift.transport.TTransportException;

import java.lang.reflect.Constructor;
import java.net.SocketException;

public class SyncConfigNodeIServiceClient extends IConfigNodeRPCService.Client
        implements SyncThriftClient, AutoCloseable {

    private final TEndPoint endPoint;
    private final ClientManager<TEndPoint, SyncConfigNodeIServiceClient> clientManager;

    public SyncConfigNodeIServiceClient(
            TProtocolFactory protocolFactory,
            int connectionTimeout,
            TEndPoint endPoint,
            ClientManager<TEndPoint, SyncConfigNodeIServiceClient> clientManager)
            throws TTransportException {
        super(
                protocolFactory.getProtocol(
                        RpcTransportFactory.INSTANCE.getTransport(
                                new TSocket(
                                        TConfigurationConst.defaultTConfiguration,
                                        endPoint.getIp(),
                                        endPoint.getPort(),
                                        connectionTimeout))));
        this.endPoint = endPoint;
        this.clientManager = clientManager;
        getInputProtocol().getTransport().open();
    }

    public void close() {
        if (clientManager != null) {
            clientManager.returnClient(endPoint, this);
        }
    }

    public void setTimeout(int timeout) {
        // the same transport is used in both input and output
        ((TimeoutChangeableTransport) (getInputProtocol().getTransport())).setTimeout(timeout);
    }

    public void invalidate() {
        getInputProtocol().getTransport().close();
    }

    @Override
    public void invalidateAll() {
        clientManager.clear(endPoint);
    }

    public int getTimeout() throws SocketException {
        return ((TimeoutChangeableTransport) getInputProtocol().getTransport()).getTimeOut();
    }

    @Override
    public String toString() {
        return String.format("SyncConfigNodeIServiceClient{%s}", endPoint);
    }

    public static class Factory extends BaseClientFactory<TEndPoint, SyncConfigNodeIServiceClient> {

        public Factory(
                ClientManager<TEndPoint, SyncConfigNodeIServiceClient> clientManager,
                ClientFactoryProperty clientFactoryProperty) {
            super(clientManager, clientFactoryProperty);
        }

        @Override
        public void destroyObject(
                TEndPoint endpoint, PooledObject<SyncConfigNodeIServiceClient> pooledObject) {
            pooledObject.getObject().invalidate();
        }

        @Override
        public PooledObject<SyncConfigNodeIServiceClient> makeObject(TEndPoint endpoint)
                throws Exception {
            Constructor<SyncConfigNodeIServiceClient> constructor =
                    SyncConfigNodeIServiceClient.class.getConstructor(
                            TProtocolFactory.class, int.class, endpoint.getClass(), clientManager.getClass());
            return new DefaultPooledObject<>(
                    SyncThriftClientWithErrorHandler.newErrorHandler(
                            SyncConfigNodeIServiceClient.class,
                            constructor,
                            clientFactoryProperty.getProtocolFactory(),
                            clientFactoryProperty.getConnectionTimeoutMs(),
                            endpoint,
                            clientManager));
        }

        @Override
        public boolean validateObject(
                TEndPoint endpoint, PooledObject<SyncConfigNodeIServiceClient> pooledObject) {
            return pooledObject.getObject() != null
                    && pooledObject.getObject().getInputProtocol().getTransport().isOpen();
        }
    }
}
